Seven Egyptian policemen were injured Friday in a suspected Islamist terrorist attack on a police patrol near the Israel-Egypt border.

Egyptian security officials reported that several of the officers were seriously injured, including a senior officer.

The detachment was ambushed during a routine patrol of the pipeline that transports natural gas from the Sinai Peninsula to Jordan. The pipeline they were monitoring has come under attack more than a dozen times in the past two years.

Just last month, Egypt said it would boost its gas supply after complaints by Jordan over the interruption of supplies due to pipeline attacks.

Earlier in the day, Suez police seized 500 kilograms (1,100 pounds) of explosives which they suspected was en route to the southern Sinai peninsula.

Suez security chief Major-General Abdel Refaat told the MENA news agency that smugglers in Cairo were preparing to transport the explosives.

Police arrested the suspected smuggler en route to the Sinai and confiscated the explosives and vehicle. The suspect later confessed to transporting the explosives to other smugglers in the Sinai.